船舶低压直流电力系统短路保护和计算

Short Circuit Protection and Calculation of Maritime Low Voltage DC Power System

随着直流电力系统在船舶行业的广泛应用,其容量越来越大,由于直流断路器容量有限且价格昂贵,故常用Fuse作为船舶直流电力系统的短路保护装置。Fuse的合理选型能够有效地防止短路支路对整个电力系统造成危害。根据系统的设计方案,应用Simsen仿真软件搭建了仿真模型,进行了短路仿真,并对仿真数据进行了计算。利用计算结果和IEC标准对低压直流电力系统所需的Fuse进行了选型和验证,确保了Fuse选型符合电力系统要求以及Fuse选型的合理性和正确性。

With the wide application of DC power system in the shipbuilding industry,its capacity is increasing.Due to the limited capacity and high price of DC circuit breaker,the Fuse is often used as the short circuit protection device of the DC power system.The reasonable selection of the Fuse can effectively prevent short circuit branch from harming the whole power system.According to the design scheme of the system,the simulation model is built by using the Simsen simulation software,the short circuit simulation is carried out,and the simulation data are calculated.Based on the calculation results and IEC standard,the selection and verification of the Fuse for the low voltage DC power system are carried out to ensure that the selection of the Fuse meets the requirements of the power system and the rationality and correctness of the Fuse selection.